/*
 * @(#)MoveAction.java
 *
 * Copyright (c) 1996-2010 by the original authors of JHotDraw and all its
 * contributors. All rights reserved.
 *
 * You may not use, copy or modify this file, except in compliance with the 
 * license agreement you entered into with the copyright holders. For details
 * see accompanying license terms.
 */
package org.jhotdraw.draw.action;

import java.awt.geom.AffineTransform;
import java.util.HashSet;

import org.jhotdraw.draw.DrawingEditor;
import org.jhotdraw.draw.Figure;
import org.jhotdraw.draw.event.TransformEdit;
import org.jhotdraw.undo.CompositeEdit;
import org.jhotdraw.util.ResourceBundleUtil;

/**
 * Moves the selected figures by one unit.
 * 
 * @author Werner Randelshofer
 * @version $Id: MoveAction.java 717 2010-11-21 12:30:57Z rawcoder $
 */
public abstract class MoveAction extends AbstractSelectedAction {

	private int dx, dy;

	/** Creates a new instance. */
	public MoveAction(DrawingEditor editor, int dx, int dy) {
		super(editor);
		this.dx = dx;
		this.dy = dy;
		updateEnabledState();
	}

	@Override
	public void actionPerformed(java.awt.event.ActionEvent e) {
		CompositeEdit edit;
		AffineTransform tx = new AffineTransform();
		tx.translate(dx, dy);

		HashSet<Figure> transformedFigures = new HashSet<Figure>();
		for (Figure f : getView().getSelectedFigures()) {
			if (f.isTransformable()) {
				transformedFigures.add(f);
				f.willChange();
				f.transform(tx);
				f.changed();
			}
		}
		fireUndoableEditHappened(new TransformEdit(transformedFigures, tx));

	}

	public static class East extends MoveAction {

		public final static String ID = "edit.moveEast";

		public East(DrawingEditor editor) {
			super(editor, 1, 0);
			ResourceBundleUtil labels = ResourceBundleUtil.getBundle("org.jhotdraw.draw.Labels");
			labels.configureAction(this, ID);
		}
	}

	public static class West extends MoveAction {

		public final static String ID = "edit.moveWest";

		public West(DrawingEditor editor) {
			super(editor, -1, 0);
			ResourceBundleUtil labels = ResourceBundleUtil.getBundle("org.jhotdraw.draw.Labels");
			labels.configureAction(this, ID);
		}
	}

	public static class North extends MoveAction {

		public final static String ID = "edit.moveNorth";

		public North(DrawingEditor editor) {
			super(editor, 0, -1);
			ResourceBundleUtil labels = ResourceBundleUtil.getBundle("org.jhotdraw.draw.Labels");
			labels.configureAction(this, ID);
		}
	}

	public static class South extends MoveAction {

		public final static String ID = "edit.moveSouth";

		public South(DrawingEditor editor) {
			super(editor, 0, 1);
			ResourceBundleUtil labels = ResourceBundleUtil.getBundle("org.jhotdraw.draw.Labels");
			labels.configureAction(this, ID);
		}
	}
}
